Quasinormal-Mode Perturbation Theory for Dissipative and Dispersive Optomechanics

André G. Primo, Natália C. Carvalho, Cauê M. Kersul, Newton C. Frateschi, Gustavo S. Wiederhecker, and Thiago P. Mayer Alegre
Phys. Rev. Lett. 125, 233601 – Published 2 December 2020
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Abstract

Despite the several novel features arising from the dissipative optomechanical coupling, such effect remains vastly unexplored due to the lack of a simple formalism that captures non-Hermiticity in the engineering of optomechanical systems. In this Letter, we show that quasinormal-mode-based perturbation theory is capable of correctly predicting both dispersive and dissipative optomechanical couplings. We validate our model through simulations and also by comparison with experimental results reported in the literature. Finally, we apply this formalism to plasmonic systems, used for molecular optomechanics, where strong dissipative coupling signatures in the amplification of vibrational modes could be observed.

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  • Received 1 June 2020
  • Revised 14 August 2020
  • Accepted 14 October 2020

DOI:https://doi.org/10.1103/PhysRevLett.125.233601

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

André G. Primo*, Natália C. Carvalho, Cauê M. Kersul, Newton C. Frateschi, Gustavo S. Wiederhecker, and Thiago P. Mayer Alegre

  • Applied Physics Department and Photonics Research Center, “Gleb Wataghin” Institute of Physics, University of Campinas, 13083-859, Campinas, São Paulo, Brazil

  • *agprimo@ifi.unicamp.br
  • alegre@unicamp.br

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Issue

Vol. 125, Iss. 23 — 4 December 2020

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